Margaretha Viljoen

Allostatic load and heart rate variability as health risk indicators.

M. Viljoen, N. Claassen, Margaretha Viljoen, 2017, African health sciences.

Importance of Tachogram Length and Period of Recording during Noninvasive Investigation of the Autonomic Nervous System

Margaretha Viljoen, Catharina C Grant, Dina C J van Rensburg, 2011, Annals of noninvasive electrocardiology : the official journal of the International Society for Holter and Noninvasive Electrocardiology, Inc.